Nut-lock.



No. 726,740.. PATENTED APR. 28, 1903.

T. F. ONEIL.

NUT LOOK.

APPLICATION FILED JAN. 10, 1 9 03.

NO MODEL of the nuts.

Like reference-numerals designate correspondin g parts throughout the several-figures of the drawings.

UNITED STATES PATENT Genres.

THOMAS-F. OFNEIL, OF GIRARD, omo.

NUT-LOCK.

sr'EcmIcATIoN forming part of Letters Patent No. 726,740, dated April as, 1903. Application filed Januar'y- 10, 1903. stun No. 138,555. (No model.

To aZZ whom it may 0m Be it known that .I, THoM'As F. ONEIL,- a citizen of the United States,residing at Girard, in the county of Trumbull and State of Ohio, have invented certain new and useful Irnprovements in Nut-Locks, of which the following is a specification.

This invention relates to an improvement in nut-locks, and has in view provision of a novel and effectual locking means for securely fastening a nut upon its bolt in engagement with the object against which it is screwed.

To this end the invention contemplates a type of nut-lock in which a pair of superposed nuts are employed upon a single-threaded bolt and have associated therewith means for effecting a locking action entirely through the Wedging of the nutsupon the threads of the bolt, thus providing a thread-lock for the nuts.

. The invention also has in view novel means for holding the nuts in wedged engagement upon the threads of the bolt and positively preventing rotation thereof in either direction.

With these and many other objects in view, which will more readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts, which will be hereinafter more fully described, illustrated, and claimed.

The essential features of the invention are necessarily susceptible to some modification without departing from the spirit or scope of theinvention; but a preferred embodiment of the latteris shown in the accompanyin g drawings, in which-- Figure 1 is an elevation of a bolt having associated therewith a nut-lock constructed in accordance with this invention, the view illustrating the holding-key in position. Fig. 2 is a similar View showing the holding-key removed and exposing one of the key-sockets, which is tern porarilyprovided for the reception of the engaging members of the holdingkey. Fig. 3 is a sectional view'on the line 3 3 of Fig. 1. Fig. 4 is an inner face view of one of lock-nuts 2 and 3, having threaded boltopenings at, engaging the single-threaded portion 5 of the bolt 1.

The nuts 2 and 3 are designed to be arranged in superposed relation, and each of the same is provided at one side thereof with a wedging clutch-face 6, preferably consisting of a plurality of ratchet-cam inclines 7,

the said ratchet-cam inclines 7 of one nut being disposed reversely to those of the other nut, so that when one nut is turned in a direction to carry it away from the other the ratchet-cam inclines 7 of the two nuts will ride upon each other and necessarily exert a strong wedgin g action, which clamps or binds the nuts upon the thread of the bolt. When either of the nuts is thus turned to effect the locking action, there is provided at diametrically opposite sides of the nuts and between adjacent shoulders of the clutch-faces thereof the intervals 8, forming key-sockets for the reception of the chock-studs 9, projected inwardly from the extremities of a bowed or semicircular holding-key 10, preferably consisting of a finely-tempered steel spring, so the same may be sprung into the locking position (shown in Figs. 1 and 3) and also pried out of engagement with the nuts. The bowed or semicircular form of the key or spring 10 permits of the'same to be placed astride one side of the match or clutch faces of the two nuts.

With the adjacent shoulders of the clutchfaces 6 engaging, whereby said clutch-faces are perfectly in match, the two'nuts are carried on together until one nut is brought against, the object. By then turning the All uses.

other nut backward the wedging action re.-

key or spring 10 is pried off, and both nuts are run on together from the bolt.

From the foregoing it is thought that the construction, operation, and many advanclines, said nuts in the locked position being relatively turned in reverse directions to provide key-sockets between adjacent shoulders 01' their clutch-faces, and a bowed springholding key provided with terminal chockstuds adapted to be sprung into engagement with said key-sockets.

In testimony whereof I affix my signature in presence of two witnesses.

THOS. F. ONEIL.

Witnesses:

FRANK R. OOWDERY, CATHERINE CoWDERY. 

